Flushing apparatus



W. G. BOSWORTHV FLusmNG AmnATus. y APPLICATION `FILED APR. 4 19|?.

1,361,814. l Patented Deo. 14,1920.

3 SHEETS-SHEET l 3 nvewloz W. G. BOSWORTH.

l FLUSHING APPARATUS.

APPLICATION mso APR. 4. 1917.

Patented Dec. 14 l a SHEETS-SHEET z.

N v v y i 55u/duron W. G.- BOSWORTH.

FLUSHING APPARATUS. APPLICATION FILED APR. 4. |917.

1,361,814, Patented Dee. 14,1920.

3 SHEETS-SHEET 3 lil/)1412114ill/117511,14

5 wuewtoz UNITEDy STATES PATENT OFFICE.

* WILLIAM Gr. BOSWORTH, OF NEW YORK, N. Y.

FLSHING APPARATS.

Specification of Letters Patent. PatentedrDec, 14 1920 Application mea April 4, 1917. serial No. 159,640.

The invention relates to flushing apparatus and one object of the invention is to construct a siphon which will operate with little, if any, noise upon the breaking of the operation of the siphon. The short arm of the siphon extends into the water contained in the tank and the siphon is started by means of a jet of water injected into the short arm of the siphon. During the time the tank is being emptied by the operation of the siphon this jet of water continues to flow with full force into the Siphon until the tank is emptied, at which time the operation of the siphon is mechanically' broken by a valve or damper and the same jet of water continues to flow at full force to refill the tank and until the water within the tank has reached or nearly reached its normal high level.

Another obj ect of the invention is to construct a valve that will permit a flushing operation to take place while-a flushing tank is being lowered and which valve is constructed so that a full force of water from a supply pipe can be delivered past the valve until the water has reached its normal high level or approaches normally that mark. l

The above and other objects of the invention will be more fully set forth in the following specification andclaims.

As illustrating certain Aspecific embodiments of the invention reference is made to the drawings forming a part of this Specification and in which drawings,

Figure l is a vertical sectional elevation of a flushing apparatus embodying the invention. This figure is a view taken as on the plane indicated by the line 1 1 of Fig. 2 looking in the direction of the arrows.

Fig. 2 is a vertical sectional view taken as along the plane indicated by the broken line 2 2 of Fig. l looking in the direction'of the arrows.

Fig. 3 is a plan view of the apparatus shown in Fig. l with the cover of the tank removed.

Fig. 4l is a view illustrating the damper or valve mechanism relied upon to break the operation of the Siphon. In this figure the parts are shown on a somewhat larger scale than they are shown in Figs. l, 2 and 3.

Fig. 5 a vertical sectional view taken as gn tlJ plane indicated by the line 5 5 of F1g.'6 is a vertical sectional view illustratmg the manner in which a float engages a locking mechanism or catch so as to release a alve stem whereby it can be restored to its normal position.

Fig. 7 is a vertical sectional view of one form of valve and float construction associated therewith which can be employed in the performing of the invention.

Fig. 8 lis a vertical sectional view of another form of valve and float associated therewith which can be employed in the perl may be made of any suitable material and may have any suitable cover. In this tank the water 2 is maintained at a normally high Y level, indicated by 3, and when the water is at this level the tank will be considered as filled. There is associated with this tank a siphon 4 having a short arm 5 that extends downwardly into the water yand a long arm 6 which extends to the members to be flushed. At .the rear side 7 of this tank there is provided a vertically extending recess portion 8 thatis defined by or provided j in the projection 9. In the construction shown this projection 9 -is formed by curving the rear side 7 forwardly into the tank and the lower ends of this projection merge with or areconnected to the base portion l() of the tank whereby the tank will be watertight. The Vupper end of this forwardly curved or recess portion is preferably provided with a roof ll which is above the normally high level of the water. The siphon 4 extends through .this roof and a water-tight seal is provided by nuts l2 and 13 and any suitable packing which may be employed with them. All openings in the water should rise above its normal level no leakagewould take place. The tank is constructed so that in case the water rises above its normal high level the Water will be discharged through the Siphon, the top of lwhich is low enough to permit the water to ofthe latter. 4 Y

siphon is started water isdrawn from the be discharged without running over the sides of the tank. The water supply comprises pipes 14 and 15, a valve 16, plpes 1"( and 18 and a nozzle or tip 19. The nozzle i tank so that the water flowsfrom its high mit l siphon and the inlowing water.

tion, indicated in this figure.

'level 3 to a low level Vwhich* is approxi- Vmately indicated by the line 3 in Fig. 2.

A float 2() is shown in its normal high velevated position in Figs. 1 and 2. As the float falls it moves along a positionable float guide 21 which normally occupies the'full line position shown in Fig. 2. As the water lowersthe float 20 of course drops and as'it drops it engages the iloat return guide 22, or positioning guide as this guide may be called. The function of this positioning guide is to force the float 20 to the left (see Fig. 2) whereby the positionable iioat guide 21 will be moved from full normal line position to its abnormal or dotted line posi- This"` guide 21 is free at this time to Vassume said abnormal or dotted position, as will hereinafter more fully appear. As the water approaches its lower level the float 20, which is preferably in the form of a ball, engages a crank 23tliat is connected to a pivoted valve 24.

This valve may also be referred to as a deflecting valve for the reason that it deflects the water, as will hereinafter appear. The members 23 and 24 are clearly shown in full line normal position in Fig. 4. Then the float 2O has reached its lowest position, which is indicated by the dotted line 20 in Figs. 2 and 4, it will have moved the crank 23 and valve 24 to the abnormal or dotted ment of the valve closes the lower end of the short arm of the siphon against the entrance of any further substantial amount of water. The moving-of the valve to this position will consequently mechanically break or stop the operation 'of the siphon and there will be practically no noise resulting from this breaking or stopping, due tothe fact that in the breaking or stopping of the operation of the siphon no air enters the siphon through the short arm thereof. This valve works in a bell-shaped member X at the lower end of the short arm of the siphon and this member also lends to the deadening of any noises which might result from the closing of said valve and the breaking or stopping 0f the operation of the Y From the time that the operation of the siphon is started up to the time that the valvey is moved to break said operation the jet of water from the nozzle or tip of the supply is allowed to continue to flow with fullforce into the Siphomt'hereby rendering available Y for flushing purposes the Water from theY in addition to the water drawn Yfrom the tank, allowing the size of the tankA to be reduced and hastening the flushing. As soon as the. operationof the siphon is broken this jet Vof water impinges against the valve,

is deflected into the bell-shaped member and V passes lthrough a window Y of said memberV directly into the tank Vand is theV water which is supplied'to refill the tank.V The valve is so shaped that it willbe held in its abnormal position by theV impinging Aof the water against it. As, fthe tank starts to refill-the iioat moves away from the crank that operates the valve and the latter must be held in its abnormal position` by means other To supply means which cally restored to positionby its own weight,

there being a counterweight 26 provided to accomplish this. A stopV 25 may be provided on the bell-shaped member X to limit the movement of the valve 24,',especially when the jet of water is cooperating with the deflecting plate 25 of the valve to maintain the latter in abnormal position.

The water supply has been described as comprising therein a valve 16. One form or surh valve is shown in Fig. 7 and another iorm is shown in Fig. S. The valve shown in Fig. 7 is the one which is illustrated as being installed in the apparatus although it will be understood that a valve like 'that shown in Fig. 8 could be readily substituted'. The valve shown in Fig. 7 comprises a casing 27 which includes a body member 2S and a head member 29. .This valve casing has any suitable inlet and outlet openings as 30 and 31, respectively, and is provided with a valve seat 32. This may be considered the main valve seat of the valve. A movable valve member 33 is shown and the particular movable valve member illustrated is of the discharge or outlet opening 31.

' a slot 45 of the stem.

member is normally maintained in Athis closed position by the valve-stem 38 which is maintained in its normal position by pressure of a spring 39 that is strong enough to oppose the pressure ofthe water, and also to maintain the main valve tight. A vpivoted strut 40 is in front of the valve member 33 and as the valve-stem 38 is moved from its normal position to an abnormal or retracted position the notched free end of the strut 40 will hold the movable valve member33 substantially closed. This valve will stay substantially closed Vfor the reason that the movable member 33 can move only a short or limited distance'away f-rom the valve seat 32 due to the strut 40. Thisl construction consequently holds in closed position what may be considered to be the movable member of an auxiliary valve.j The auxiliary valve comprises the interior barrel of the shell-shaped member 33 that engages the exterior of the tubular extension 34 and covers the radial opening 35 when the barrel member is thus held. In other words, the auxiliary'valve may be considered as a cylindrical valve construction because the openings 35 stiltreman v'covered by the shellshaped member. As the valve-stem 38 approaches the .end of its movement toward the abnormal or full retracted position a shoulder 41 engages a. cam 40 on the pivoted strut so that the notched end of said. strut is moved out of engagement with the movable valve member whereby the pressure of the water will forceV the, movable valve member 33 forwardly to its abnormal or full open position, or in other words to a position where the water can ilow directly from the openings 35 into the interior of the/casing from whence the water flows through valve-stem 38 may be considered a part of a valve operating mechanism and this vvalve operating mechanism or the valve-.stem

thereof is maintained in its abnormal or retracted position by a locking mechanism or catch 42, which locking mechanism or catch is pressed by a spring 43 which is secured to the casing by bolts 44 and which catch enters As long as the catch 42 remains in the slot 45 the valve-stem 38 is held in retracted position. When the valve-stem 38 is in its normal position a lug 4G thereupon engages the upper end of the positionable float guide 21 and holds the latter in its normal position. Vhen, however, the Avalve-stem 38 is in its retracted position this lug voccupies the position indicated by 4G and the positionable float guide 21 is i then free to move from the full line to the i that by the time the lioat 20 reaches the dot-y dotted line position-shown in F ig. 7. This 'movement is accomplished by the float 20 The be noted that the lower end of the positionable lioat guide 21 is held so that it can swing, due to the ball and socket connection clearly shown in Fig. 4 and indicated inV Figs. 1 and 2. As the water rises in the tank, thus lifting the float 20, the float will finally occupy the broken lineor dotted position indicated by 21 and when in this position the collar or wearing plate 21a on the float will engage depending anges 42a and 42b of the catch 42, thus lifting the catch out of the notch whereby the spring 39 will restore the valvestem 38 tok its normal position. As the valve-stem 38 is restored to its normal position the lug 46 will restore the positionable iioat guide 21 to its normal or full line position and ithe valve-stem 38 will also force the movable valve member 33 to its normal position and the rest of the members in the valve will all be automatically restored to their normal positions. The form of valve shown in Fig. 8 has a casing 47 which comprises members 48 and 49. An inlet opening is designated by 50 and an outlet opening is designated by 51. The casing has a diaphragm which provides a valve seat 52. This valve seat may be considered to be made up of a main valve seating portion 53 and an auxiliary-valve seating portion 54. A main movable valve member 55 can be moved by a valve-stem 56 against the pressure of the water so as to open the valve and permit a full flow of water through the casing, provided an auxiliary member 57 is moved from its ksubstantially seated position. A yoke 58 has longitudinally extending legs 59 the free ends of which are secured to the casing member 48. One end of a spring 60 engages a cross member 6l of this yoke 58 and the other end of this spring engages the valve-stem 56 so as to normally tend to force the movable main valve member 55 to closed or Vseated position. The. cross member of the yoke is also engaged by one end of a spring '62 the other end of which spring presses against the auxiliary valve member 57 tending to continuously force this auxiliary valve member 57 to closed position. The free notched end of a strut63 which is pivotally mounted upon the casing `at or by means of a member 64 normally engages the auxiliary valve member 57. This valve member 57 is mounted upon the valve-stem 5G. As soon as the main valve member 55 is forced from its normal seating position it allows the incoming water to press on the rear side of the auxiliary valve member 57 in a manner to tend to force the auxiliary valve member forwardly off of its seat and the spring G2 is not itself strongV enough to maintain the auxiliary valve member on its seat against the pressure of the water. The

s function;

69 for forcing it into the notched portionr strut 6.3"hastlrerefore been provided tormaintain theY valve member 57 in YsubstantiallyY closed'position until it is desired to release this valve member 57 whereby the full supply of water can pass through the vvalve casing. The release of" the. auxiliary Avalve member 57 is accomplished by a member 65 on the valvestem 56 engaging a cam portionV 63 that is on the strut, 63 whereby said strut .will be lifted from its engagement with the .as soon as thev latter is in position which will permit the` locking actionV `to take place. The valve-stem 56 has a lug 70 for moving the positionable. float guide yfrom an abnormal or dotted position 21X to a normal full line position 2ly and for holding the guide Y in itsnorrnal pos1tiou.

lt can also be relied upon `to prevent turning of the valvefstem 56. There is secured to the casing a return float guide or positioning guide 22,X that ycauses the positionable float guide 21 to be moved from its normal position to abnormal position as `the float falls 1n a manner which will be obvious from an inspection of Fig.

S, especially in vie-w of. what has preceded in connection with a description of the member which performs the Vsame function in Fig. 7. The float may be made of any suitablemateri'al, as glass or metal, is air-tight and is preferably in the form of a ball having a tubular portion extending through it. which tubular portion is the part which di` rectly engages the positionable float guide 2l. A filler washer-or washers-, such as 67, is provided at the top of the ball to furnish the member which directly engages the ends of the depending members 42a and 42, clearly shown in Fig.

It will be observed that the movable valve member shown in Fig. 7 is opened by the pressure of the water and is held in closed position solely by the pressure of the spring 39 which forces'the stem 38 against the movable member 33 in a manner and with Sullicient force to maintain the valve closed, even against the pressure of the water. In vthe valve construction shown in Fig. 8 the valve is opened by moving the main or movable f valve member 55 against the head of the water. 1When the valve is in closed position the water assists in maintaining the valve member 55 against its seat and consequent-ly the spring of the valve shown in Fig. 8

need not be strongV asV the spring 39 of Y the valve shown in Fig. 7. The valves shown in Figs. 7 and 8 when installed in the 1,3m ,e142 Y apparatus illustrated operate in4 substan` tial-ly thesame manner.V The stem 56 shown in Fig.f8 may be considered as a part of the valif'e'operating means. and the means 66A shown in Fig. 8 may berconsidered as a means for locking theV valve operating mei-hanism when in one position.

ln the apparatus illustrated in Figs. l, 2 and 3 the valve 16 isof the form shown in Fig. V7 and in order that the valve may be opened yby a pushing movement instead of a pulling movement there isprovided as a part of the valveoperating mechanism a i lever 7l which is fulcrumed atV 72 on aV member 73 which is` secured to. the 'tankl'in positionl the valve operating mechanism of-V stem thereof is locked or caught by the loclc ingmechanism or catch@ Thile the valve 1s closed, or in other words7 when the mov.-

of the lever could be Y able parts thereof are in a normal position, i.

a lug on the stem maintains the positionable float guide 2l in a normal position out of engagement with said locking When, however thevalve-stem is moved to its abnormal or retracted position the construction is such that this positionable` float guide is free to be moved from its normal position to its abnormal position, whereby it can control the movement of the float to Vits high'abnormal positionso that'the float will effect an unlocking or release of the valve operatmg meansor valve-stem thereof andV permit the return ofthe valve-stem and the parts associated therewith to their normal positions. When the valve is opened a jet of water Hows from the nozzle or tip 19 at the end of the supply pipe into the short arm of the Siphon starting the operation of the siphon. The starting of the operation of the siphon causes the water withintheY tank to be lowered, this taking place while the jet from the water supply continues to flow with full force into the short arm of the siphon. As the water in the tank approaches its lower level the float V20 engages the crank 23 gradually moving the pivoted valve 24 from its normal full line position shown in Fig. 4 to its abnormal or dotted position shown inl said gure, the dotted line position being the position which this member occupies. when the water has reached its lowest level in the tank; yin other words, when the tank is to be considered as having been emptied. As the valve 24 comes 'into said abnormal position it gradually breaks or stops the operation of the siphon and the water dischargedl from the tip or nozzle 19 is finally deflected into the bell- Vshaped member at the end of the siphon and ultimately into the tank.v 'During the initial movement of the valve 24, from itsnormal to its abnormal position, it closes the opening at the lower end of the short arm of the siphon, thus gradually decreasingtheflow of water throughthe siphon as above'indicated. Y

The decrease of flow of water from the siphon of the flushing apparatus stopsthe siphonic action within the bowlfor which the flushing apparatus is particularly designed and intended to be used-while there yetl remains a sufficient supply of water passing through the Siphon of the flushing apparatus to refill or seal the bowl after the siphonicY action within the bowl has been broken. vThe reduced flow through the vSiphon of the iiushing apparatus continues until the valve24 has been moved to its abnormal position where it serves to deiect the water from the tip or nozzle 19 into the bell-shaped member and ultimately into the tank.V As the water starts .to rise in the tank the float' 2O disengages the crank 23 and the valve .remains in place in said abnormal position as klong asV the jet of watercontinues to flow from the nozzle 19.

.The main valve is moved or opened far enough by hand to be caught or locked before the secondary or auxiliary valve can be released. This preventsY flushing until the main valve is caught; otherwise, thetank might be Yemptiedand lif the main valve had not been opened far enough to be caught the `tank would not be refilled. The valve construction is suchas .to allow practically the full yforce of. water to be injected into the siphon, This gives Aa* quickstart and makes the discharge of water from the siphon much more rapid than with the ordinary valve. Due to .this construction the 'same or betterresults are obtainable thanby using what isknown at the present time asia high tanlnfor flushing purposes; As has beenl pointed out the positionable float guidey 21 has'been moved from its normal positionrto its abnormal position; in

other words, to `a position in which it can effect a release of the means which locks the valve operating mechanism in a retracted or abnormal. position. The rising of the water in the tank withth'e positionable float guide v21 in. its abnormal positioncauses the float to ultimately engage said locking .meanswhereby the-release of the valve operating mechanism is effected, thus causmga closlng of the valve anda shutting offV ofthe flow of n water which is passing through the supply pipe, and the return of the valve stem dueto the engagement of the lug thereupon with the positionable float guide restores thelat'- ter to its normal position. When this takes place the valve 24 is moved from its abnormal or Vdotted line position shown in Fig. 4

lto its full'line position due to the counterweight 26 and the parts are in position and.

ready for performing another flushing operation on the opening of the valve in the proved form of valve is used on high tanks.

If, for any reason, the valve 16 should fail to operate properly, due for instance to too great pressure of the water within the supply pipe 14, it will be manifest that the pressure of the water iiowing through this pipe can be readily reduced, as by the introducn tion of a hand valve T that will throttle the passageway through the pipe. This valve thus introduced into Ythe .pipe could be ernployed -t o shut off the water from the flushingsystem, if such were desired, in order to facilitate repairs.

The improvements herein set forth are not limited to the precise construction and arrangement shown and described for they may be embodied in various forms and modifications without departing from the spirit and scope of the invention.

1 rWhat I claim and desire to secure by LettersPatent of the United VStates is: Y

l.l A flushing apparatus of the` class described comprising in combination ay tank, a

vSiphon having the short arm thereof extending downwardly into said tank, a water-supply pipe having at the end thereof a tip or nozzle arranged to project a Jet of water into the short arm of the siphon for starting and supplying waterV to the latter, a valve 1in said supply pipe which is opened by hand and means by whichsaid valve is lcaused to remain open until automatically allowed to close, a defiecting valve arranged to close the shortarm of the siphon when the valve is in an abnormal position, whereby the operation ofthe Siphon will be broken, and cause the water from said j et lto enterfthe tank instead of the` Siphon, a .crank connected to said 'defleeting valvefand a float arranged'to cooperate' with said hand-opera'tt-idv 'valve and ysaid crank so that as the float approaches its lowest position it will engage the crank and move thedeliecting valvefroinits normal position to said abnormalposition and so that as the float approaches its upper posi-v f said valve being constructed so that when moved from its normal position to an abnormal position it will close the lower end of said short arm while stillv sealed with the water in the tank and by said closing will stop the operation of the siphon, the construction also being such'that said valve will be held in place in said abnormal position by the jet oi water being projected against it until said jet is interrupted, after which the valve is automatically restored to its normal position. Y y

V3. In combination a siphon, a water-sup- -'-ply pipe having artip or nozzle for projecting a jet of water intosaid siphon, a valve movable upwardly into position to break the oper-ation of the siphon. andfor deflecting the water of said j et and constructed so that it is held in vsaid elevatedv position by s aid jet, the construction of said valve also being such that-upon said jet being stopped saidV valve will drop from said elevated position, due to its own weight.

4.'In adevice Vvof the class described, in ,Y combination a siphon having lat the short end ,thereof a bell-shaped member, a sup-.

' vply'pipeY having aV tip or nozzle for direct- Ving a jet of water into the siphon in a manner tostart the siphon, a deflecting'valye in said bell-shapedmember which in its normal position .permits the jet to be directed from the tipror nozzle 'into said siphon and which 1valve is constructed Sothat it can be movedV to an abnormal position to stop the operation of the siphon andV to prevent the water'fromthe jet entering the siphon.

V5. Aftank havingin combination therewith Va siphon the short arm` of whichextends ldownwardly into the tank,A the long :arm Vof Vwhich extends downwardly. below the bottonirrof the tank, the top of the siphon being below the lowest iunsealed opening fin the tank and V ixtending through an openingin one `of the walls of the tank, which vopening is sealed but above theY topy of the upper normal water levelwithin the tankand means whereby fthe-siphon will be Vstarted so astol withdraw water fromithe ktank and for-thereafter refilling the tank ywith water toits normal level.

6. A tank having a vertically-extending 'portion of .the rearkv wall thereof lcurvingV forwardly into the tank and gagroof portion covering theVY top of,l 'said curved portion, the lower part ofV said curved portion beingv integral with or connectedwiththe base of the tank, and in combination with Y of arranged to extend into water within the tank, the siphon extending through said A said tank a siphon' with Vthe short armV therej roof Vso that the long arm thereof will pass through the vertically extending cavity provided inthe forwardly extending curved portion and out of contact with water in the tank. i

V7. An apparatus of Vthe class described n comprising in combination a tank, a siphonV having thek shortV arm thereof extending into theY water inv said tank, a supply pipe having a member arranged to directa jet of water intoV the siphon in a` manner toV start the operation-"thereof when the tank is filled, a valve which can be opened by hand whereby said jet will be started,V means for` holdingV said valve open until thentank is emptied and until the tank is again illed or nearly so, a pivoted valve, a float and means whereby whensaid float approaches its lowest position as the water lfalls in theV tank said pivoted-valve willbe moved to its abnormal position whereby .the operai tion of theV siphon will be broken and the jet of water will be deflected into the tank,

means for guiding the float so that asl said' float movesnpwardly .it can release the Vhand-operated valve whereby thelatter can be automatically closed. Y Y Y 8. A device of'theclass described havingV in combination-a lushingtank, arwaftersupply pipe having a valve, means vfor dis-Y cliarging'waterY fromV said tank when the valve in the'w'ater-'supply4 pipe. is opened,

mechanism for locking saidjvalve infopen n position duringV the'. fall of Y waterV withinY the tank, a iioat, positionable means for guidingisaid' ioat which meansV can .be moved to Van abnormal position whenxthe valve lis opened whereby theloat is moved.'`

from its` normal'rposition-to its'abnormal position, a return or positioning guideengaged by said 'loat which returnguide effects a moving 4of the positionableffloat guide to its abnormalfposition asvthe oat ,moves downwardly Y`with the fall of the water, means actuated by said float for pre.-

VventingY a further Vdischarge Vfrom thetank,

said 'loat, being positioned by the position- 1 Y able float guide; asthe water-rises whereby said float actuates Ythemechanism which locks the'valve ingits open position Vthus allowing-an' automatic closing of-the valve.

'9. Iii-combination in aV flushing tank, a .siphon having Vthe short arm-'thereof extending downwardly Vinto the water within -said tank, a. water-'supply Vpipe l,havingy a `tip or nozzle for directing waterV into the lowerl end of the short "arm `o the siphonso asto start the siphon, a hand-operated valve in said supply-pipe for permittingVv the flow the nozzle, a crank connected thereto, a

float, a positionable float guide which iioat guide is associated with a member of said first named valve so that the closing of said valve willmove the said float guide from its abnormal to its normal position, means for holding the valve open until released by the float, a return or positioning guide for moving the positionable float guide to abnormal position, the float guide being arranged so that the fall of the water in the tank will cause the float to engage the crank of the said defleeting valve whereby said valve will be moved to a position to break the operation of the siphon, the construction of said valve being such that said valve will remain in said last-mentioned position until the tank is'filled, the positionable ioat guide being arranged so that when in its abnormal position the raising of the float will cause a releasing of the means which holds the valve in the water-supply pipe open.

10. In a device of the class described in. combination a flushing tank having therein a siphon with a short arm of the siphon eX- tending into the water within the tank, a water supply pipe having a tip or nozzle arranged to direct a jet of water into the lower end of the short arm of said siphon so as to start the operation of the siphon, a normally closed spring-pressed valve having valve operating means which can be moved from its normal position in which the valve is closedV to an abnormal position for opening the valve, a locking means for engaging said valve operating means and for holding said valve operating means in abnormal position until released, a float and. a positionable float guide held in normal position by said valve operating means which guide is automatically moved to abnormal position by the iioat after the float starts to fall and prior to the float reachingT anY elevated abnormal position, means for guiding the float whereby said position of the positionable float guide can be effected, a movable valve and crank connected thereto, which movable valve .can bemoved from a normal to an abnormal position by the lioat as the water in the tank reaches a low level, whereby in said abnormal position the valve will break the operation of the siphon and will deiiect the water delivered from the tip or nozzle into the tank so that the water in the tank can be restored toits normal elevated position, the construction being Ysuch that as the float rises to its elevated.

abnormal position it will automatically cause the release of the locking means so that the valve operating means will move the movable valve member to its normal or closed position and whereby the fioat and the positionable'float guide will be restored to their normal positions.

11. A Iiushing device having a tank, a siphon through which water is withdrawn from said tank, the short arm of which siphon is provided with a valve that is under the control of the water in the tank and which valve operates so as to stop the simponic action before the falling Water 1n the tank reaches the lower end of the short arm of the siphon.

12. A flushing device having a tank, and a siphon throughwhich water is Withdrawn from said tank.l the short arm of which siphon is provided withk a valve that is under the control of water in the tank and which valve operates to stop the siphonir action before air can enter the lower end. of the short arm of the siphon.

13. A flushing device of the class described having a siphon, a valve at the en trance end of the short arm of the siphon, and means for controlling the position of said valve, whereby the same will be closed prior to the surface of the water reaching the lower end of the short arm of the siphon and break the operation of the siphon.

14. A device of the class described comprising in combination a tank or receptacle for holding water, a siphon for withdrawing the water from the tank, a valve provided for the short arm of the siphon, and means under the control of the falling waterwithin the tank for mechanically moving the valve so that the How through the siphon will be restricted, to thereby break the siphonic action prior to the upper surface of the water reaching the lower end of the short arm of the'siphon. Y

15. A device of the class described comprising in combination a. tank, a siphon through which waterv is vwithdrawn from said tank, a valve for the'short arm of said siphon, and a float for moving, during its downward movement, the valve toward closed position, the construction being such that the valve substantially closes the en'- trance end of the ,short arm against the entrance of any substantial amount of water whereby the valve can stop the action of the siphon beforevthe ytop of the filling water within the tank reaches a position where air can enter the short arm of the siphon.

16. AV flushing device having a tank, a siphon through which water is withdrawn from the tank, and a valve cooperating with one arm of the siphon to stop the operation of the siphon before air can enter the said arm. c

This specification signed and witnessed this 2 day of April, A. D. 1917.

- WILLIAM G. BOSWORTH:

Signed in the presence of` EDWIN A. PACKARD, HENRY T. HQRNIDGE.

It is hereby certified that in Letters Patent No. 1,361,814, granted December 14,

1920, upon the application of William G. Bosworth, of New York, N. Y., for an improvement in Flushing Apparatus, an error appears in the printed speoication requiring correction as follows: Page 7, line 74, claim 11, for the Word simponic read syphonic; and that the said Letters Patent should be read with this correction therein that the same may conform to the record of the case in the Patent Office. i

Signed and sealed this 25th day of January, A. D., 1921.

[SEAL] L. B. MANN,

Acting Oommissoner of Patents. 

